<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"> <style>
	.KEYW {color: #933;}
	.COMM {color: #bbb; font-style: italic;}
	.NUMB {color: #393;}
	.STRN {color: #393;}
	.REGX {color: #339;}
	.line {border-right: 1px dotted #666; color: #666; font-style: normal;}
	</style></head><body><pre><span class='line'>  1</span> <span class="COMM">/**
<span class='line'>  2</span>  * Hilo
<span class='line'>  3</span>  * Copyright 2015 alibaba.com
<span class='line'>  4</span>  * Licensed under the MIT License
<span class='line'>  5</span>  */</span><span class="WHIT">
<span class='line'>  6</span> 
<span class='line'>  7</span> </span><span class="COMM">/**
<span class='line'>  8</span>  * &lt;iframe src='../../../examples/ParticleSystem.html?noHeader' width = '550' height = '400' scrolling='no'>&lt;/iframe>
<span class='line'>  9</span>  * &lt;br/>
<span class='line'> 10</span>  * @class 粒子系统
<span class='line'> 11</span>  * @augments Container
<span class='line'> 12</span>  * @module hilo/game/ParticleSystem
<span class='line'> 13</span>  * @requires hilo/core/Hilo
<span class='line'> 14</span>  * @requires hilo/core/Class
<span class='line'> 15</span>  * @requires hilo/view/View
<span class='line'> 16</span>  * @requires hilo/view/Container
<span class='line'> 17</span>  * @requires hilo/view/Bitmap
<span class='line'> 18</span>  * @requires hilo/view/Drawable
<span class='line'> 19</span>  * @requires hilo/util/util
<span class='line'> 20</span>  * @property {Number} [emitTime=0.2] 发射间隔
<span class='line'> 21</span>  * @property {Number} [emitTimeVar=0] 发射间隔变化量
<span class='line'> 22</span>  * @property {Number} [emitNum=10] 每次发射数量
<span class='line'> 23</span>  * @property {Number} [emitNumVar=0] 每次发射数量变化量
<span class='line'> 24</span>  * @property {Number} [emitterX=0] 发射器位置x
<span class='line'> 25</span>  * @property {Number} [emitterY=0] 发射器位置y
<span class='line'> 26</span>  * @property {Number} [totalTime=Infinity] 总时间
<span class='line'> 27</span>  * @property {Number} [gx=0] 重力加速度x
<span class='line'> 28</span>  * @property {Number} [gy=0] 重力加速度y
<span class='line'> 29</span>  * @param {Object} properties 创建对象的属性参数。可包含此类所有可写属性。
<span class='line'> 30</span>  * @param {Object} properties.particle 粒子属性配置
<span class='line'> 31</span>  * @param {Number} [properties.particle.x=0] x位置
<span class='line'> 32</span>  * @param {Number} [properties.particle.y=0] y位置
<span class='line'> 33</span>  * @param {Number} [properties.particle.vx=0] x速度
<span class='line'> 34</span>  * @param {Number} [properties.particle.vy=0] y速度
<span class='line'> 35</span>  * @param {Number} [properties.particle.ax=0] x加速度
<span class='line'> 36</span>  * @param {Number} [properties.particle.ay=0] y加速度
<span class='line'> 37</span>  * @param {Number} [properties.particle.life=1] 粒子存活时间，单位s
<span class='line'> 38</span>  * @param {Number} [properties.particle.alpha=1] 透明度
<span class='line'> 39</span>  * @param {Number} [properties.particle.alphaV=0] 透明度变化
<span class='line'> 40</span>  * @param {Number} [properties.particle.scale=1] 缩放
<span class='line'> 41</span>  * @param {Number} [properties.particle.scaleV=0] 缩放变化速度
<span class='line'> 42</span> */</span><span class="WHIT">
<span class='line'> 43</span> </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">ParticleSystem</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="KEYW">function</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 44</span> </span><span class="WHIT">    </span><span class="COMM">//粒子属性</span><span class="WHIT">
<span class='line'> 45</span> </span><span class="WHIT">    </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">props</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">[</span><span class="STRN">'x'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'y'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'vx'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'vy'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'ax'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'ay'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'rotation'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'rotationV'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'scale'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'scaleV'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'alpha'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'alphaV'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="STRN">'life'</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 46</span> </span><span class="WHIT">    </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">PROPS</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">[</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 47</span> </span><span class="WHIT">    </span><span class="KEYW">for</span><span class="PUNC">(</span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">i</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">l</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">props.length</span><span class="PUNC">;</span><span class="NAME">i</span><span class="WHIT"> </span><span class="PUNC">&lt;</span><span class="WHIT"> </span><span class="NAME">l</span><span class="PUNC">;</span><span class="NAME">i</span><span class="WHIT"> </span><span class="PUNC">++</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 48</span> </span><span class="WHIT">        </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">p</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">props</span><span class="PUNC">[</span><span class="NAME">i</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 49</span> </span><span class="WHIT">        </span><span class="NAME">PROPS.push</span><span class="PUNC">(</span><span class="NAME">p</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 50</span> </span><span class="WHIT">        </span><span class="NAME">PROPS.push</span><span class="PUNC">(</span><span class="NAME">p</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="WHIT"> </span><span class="STRN">"Var"</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 51</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 52</span> 
<span class='line'> 53</span> </span><span class="WHIT">    </span><span class="COMM">//粒子默认值</span><span class="WHIT">
<span class='line'> 54</span> </span><span class="WHIT">    </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">PROPS_DEFAULT</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 55</span> </span><span class="WHIT">        </span><span class="NAME">x</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 56</span> </span><span class="WHIT">        </span><span class="NAME">y</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 57</span> </span><span class="WHIT">        </span><span class="NAME">vx</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 58</span> </span><span class="WHIT">        </span><span class="NAME">vy</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 59</span> </span><span class="WHIT">        </span><span class="NAME">ax</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 60</span> </span><span class="WHIT">        </span><span class="NAME">ay</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 61</span> </span><span class="WHIT">        </span><span class="NAME">scale</span><span class="PUNC">:</span><span class="NUMB">1</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 62</span> </span><span class="WHIT">        </span><span class="NAME">scaleV</span><span class="PUNC">:</span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 63</span> </span><span class="WHIT">        </span><span class="NAME">alpha</span><span class="PUNC">:</span><span class="NUMB">1</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 64</span> </span><span class="WHIT">        </span><span class="NAME">alphaV</span><span class="PUNC">:</span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 65</span> </span><span class="WHIT">        </span><span class="NAME">rotation</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 66</span> </span><span class="WHIT">        </span><span class="NAME">rotationV</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 67</span> </span><span class="WHIT">        </span><span class="NAME">life</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NUMB">1</span><span class="WHIT">
<span class='line'> 68</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 69</span> 
<span class='line'> 70</span> </span><span class="WHIT">    </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">diedParticles</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">[</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 71</span> 
<span class='line'> 72</span> </span><span class="WHIT">    </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">ParticleSystem</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">Class.create</span><span class="PUNC">(</span><span class="COMM">/** @lends ParticleSystem.prototype */</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 73</span> </span><span class="WHIT">        </span><span class="NAME">Extends</span><span class="PUNC">:</span><span class="NAME">Container</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 74</span> </span><span class="WHIT">        </span><span class="NAME">constructor</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">properties</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 75</span> </span><span class="WHIT">            </span><span class="NAME">this.id</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.id</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="NAME">properties.id</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="NAME">Hilo.getUid</span><span class="PUNC">(</span><span class="STRN">"ParticleSystem"</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 76</span> 
<span class='line'> 77</span> </span><span class="WHIT">            </span><span class="NAME">this.emitterX</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 78</span> </span><span class="WHIT">            </span><span class="NAME">this.emitterY</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 79</span> 
<span class='line'> 80</span> </span><span class="WHIT">            </span><span class="NAME">this.gx</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 81</span> </span><span class="WHIT">            </span><span class="NAME">this.gy</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 82</span> </span><span class="WHIT">            </span><span class="NAME">this.totalTime</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">Infinity</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 83</span> 
<span class='line'> 84</span> </span><span class="WHIT">            </span><span class="NAME">this.emitNum</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">10</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 85</span> </span><span class="WHIT">            </span><span class="NAME">this.emitNumVar</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 86</span> 
<span class='line'> 87</span> </span><span class="WHIT">            </span><span class="NAME">this.emitTime</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">.</span><span class="NUMB">2</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 88</span> </span><span class="WHIT">            </span><span class="NAME">this.emitTimeVar</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 89</span> 
<span class='line'> 90</span> </span><span class="WHIT">            </span><span class="NAME">this.particle</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="PUNC">}</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 91</span> 
<span class='line'> 92</span> </span><span class="WHIT">            </span><span class="NAME">ParticleSystem.superclass.constructor.call</span><span class="PUNC">(</span><span class="KEYW">this</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">properties</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 93</span> 
<span class='line'> 94</span> </span><span class="WHIT">            </span><span class="NAME">this.reset</span><span class="PUNC">(</span><span class="NAME">properties</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 95</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 96</span> </span><span class="WHIT">        </span><span class="NAME">Statics</span><span class="PUNC">:</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 97</span> </span><span class="WHIT">            </span><span class="NAME">PROPS</span><span class="PUNC">:</span><span class="NAME">PROPS</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 98</span> </span><span class="WHIT">            </span><span class="NAME">PROPS_DEFAULT</span><span class="PUNC">:</span><span class="NAME">PROPS_DEFAULT</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 99</span> </span><span class="WHIT">            </span><span class="NAME">diedParticles</span><span class="PUNC">:</span><span class="NAME">diedParticles</span><span class="WHIT">
<span class='line'>100</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>101</span> </span><span class="WHIT">        </span><span class="COMM">/**
<span class='line'>102</span>          * 重置属性
<span class='line'>103</span>          * @param {Object} cfg
<span class='line'>104</span>         */</span><span class="WHIT">
<span class='line'>105</span> </span><span class="WHIT">        </span><span class="NAME">reset</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">cfg</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>106</span> </span><span class="WHIT">            </span><span class="NAME">util.copy</span><span class="PUNC">(</span><span class="KEYW">this</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">cfg</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>107</span> </span><span class="WHIT">            </span><span class="NAME">this.particle.system</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">this</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>108</span> </span><span class="WHIT">            </span><span class="KEYW">if</span><span class="PUNC">(</span><span class="NAME">this.totalTime</span><span class="WHIT"> </span><span class="PUNC">&lt;=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>109</span> </span><span class="WHIT">                </span><span class="NAME">this.totalTime</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">Infinity</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>110</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>111</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>112</span> </span><span class="WHIT">        </span><span class="COMM">/**
<span class='line'>113</span>          * 更新
<span class='line'>114</span>          * @param {Number} dt 间隔时间 单位ms
<span class='line'>115</span>         */</span><span class="WHIT">
<span class='line'>116</span> </span><span class="WHIT">        </span><span class="NAME">onUpdate</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">dt</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>117</span> </span><span class="WHIT">            </span><span class="NAME">dt</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">.</span><span class="NUMB">001</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>118</span> </span><span class="WHIT">            </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">this._isRun</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>119</span> </span><span class="WHIT">                </span><span class="NAME">this._totalRunTime</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">dt</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>120</span> </span><span class="WHIT">                </span><span class="NAME">this._currentRunTime</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">dt</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>121</span> </span><span class="WHIT">                </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">this._currentRunTime</span><span class="WHIT"> </span><span class="PUNC">>=</span><span class="WHIT"> </span><span class="NAME">this._emitTime</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>122</span> </span><span class="WHIT">                    </span><span class="NAME">this._currentRunTime</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>123</span> </span><span class="WHIT">                    </span><span class="NAME">this._emitTime</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">getRandomValue</span><span class="PUNC">(</span><span class="NAME">this.emitTime</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">this.emitTimeVar</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>124</span> </span><span class="WHIT">                    </span><span class="NAME">this._emit</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>125</span> </span><span class="WHIT">                </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>126</span> 
<span class='line'>127</span> </span><span class="WHIT">                </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">this._totalRunTime</span><span class="WHIT"> </span><span class="PUNC">>=</span><span class="WHIT"> </span><span class="NAME">this.totalTime</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>128</span> </span><span class="WHIT">                    </span><span class="NAME">this.stop</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>129</span> </span><span class="WHIT">                </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>130</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>131</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>132</span> </span><span class="WHIT">        </span><span class="COMM">/**
<span class='line'>133</span>          * 发射粒子
<span class='line'>134</span>         */</span><span class="WHIT">
<span class='line'>135</span> </span><span class="WHIT">        </span><span class="NAME">_emit</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>136</span> </span><span class="WHIT">            </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">num</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">getRandomValue</span><span class="PUNC">(</span><span class="NAME">this.emitNum</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">this.emitNumVar</span><span class="PUNC">)</span><span class="PUNC">>></span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>137</span> </span><span class="WHIT">            </span><span class="KEYW">for</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">i</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT"> </span><span class="NAME">i</span><span class="WHIT"> </span><span class="PUNC">&lt;</span><span class="WHIT"> </span><span class="NAME">num</span><span class="PUNC">;</span><span class="WHIT"> </span><span class="NAME">i</span><span class="PUNC">++</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>138</span> </span><span class="WHIT">                </span><span class="NAME">this.addChild</span><span class="PUNC">(</span><span class="NAME">Particle.create</span><span class="PUNC">(</span><span class="NAME">this.particle</span><span class="PUNC">)</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>139</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>140</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>141</span> </span><span class="WHIT">        </span><span class="COMM">/**
<span class='line'>142</span>          * 开始发射粒子
<span class='line'>143</span>         */</span><span class="WHIT">
<span class='line'>144</span> </span><span class="WHIT">        </span><span class="NAME">start</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>145</span> </span><span class="WHIT">            </span><span class="NAME">this.stop</span><span class="PUNC">(</span><span class="KEYW">true</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>146</span> </span><span class="WHIT">            </span><span class="NAME">this._currentRunTime</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>147</span> </span><span class="WHIT">            </span><span class="NAME">this._totalRunTime</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>148</span> </span><span class="WHIT">            </span><span class="NAME">this._isRun</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">true</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>149</span> </span><span class="WHIT">            </span><span class="NAME">this._emitTime</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">getRandomValue</span><span class="PUNC">(</span><span class="NAME">this.emitTime</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">this.emitTimeVar</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>150</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>151</span> </span><span class="WHIT">        </span><span class="COMM">/**
<span class='line'>152</span>          * 停止发射粒子
<span class='line'>153</span>          * @param {Boolean} clear 是否清除所有粒子
<span class='line'>154</span>         */</span><span class="WHIT">
<span class='line'>155</span> </span><span class="WHIT">        </span><span class="NAME">stop</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">clear</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>156</span> </span><span class="WHIT">            </span><span class="NAME">this._isRun</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">false</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>157</span> </span><span class="WHIT">            </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">clear</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>158</span> </span><span class="WHIT">                </span><span class="KEYW">for</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">i</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.children.length</span><span class="WHIT"> </span><span class="PUNC">-</span><span class="WHIT"> </span><span class="NUMB">1</span><span class="PUNC">;</span><span class="WHIT"> </span><span class="NAME">i</span><span class="WHIT"> </span><span class="PUNC">>=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT"> </span><span class="NAME">i</span><span class="PUNC">--</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>159</span> </span><span class="WHIT">                    </span><span class="NAME">this.children</span><span class="PUNC">[</span><span class="NAME">i</span><span class="PUNC">]</span><span class="PUNC">.</span><span class="NAME">destroy</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>160</span> </span><span class="WHIT">                </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>161</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>162</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>163</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>164</span> 
<span class='line'>165</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'>166</span>      * @class 粒子
<span class='line'>167</span>      * @inner
<span class='line'>168</span>      * @param {Number} vx x速度
<span class='line'>169</span>      * @param {Number} vy y速度
<span class='line'>170</span>      * @param {Number} ax x加速度
<span class='line'>171</span>      * @param {Number} ay y加速度
<span class='line'>172</span>      * @param {Number} scaleV 缩放变化速度
<span class='line'>173</span>      * @param {Number} alphaV 透明度变换速度
<span class='line'>174</span>      * @param {Number} rotationV 旋转速度
<span class='line'>175</span>      * @param {Number} life 存活时间
<span class='line'>176</span>     */</span><span class="WHIT">
<span class='line'>177</span> </span><span class="WHIT">    </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">Particle</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">Class.create</span><span class="PUNC">(</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>178</span> </span><span class="WHIT">        </span><span class="NAME">Extends</span><span class="PUNC">:</span><span class="NAME">View</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>179</span> </span><span class="WHIT">        </span><span class="NAME">constructor</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">properties</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>180</span> </span><span class="WHIT">            </span><span class="NAME">this.id</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.id</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="NAME">properties.id</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="NAME">Hilo.getUid</span><span class="PUNC">(</span><span class="STRN">"Particle"</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>181</span> </span><span class="WHIT">            </span><span class="NAME">Particle.superclass.constructor.call</span><span class="PUNC">(</span><span class="KEYW">this</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">properties</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>182</span> </span><span class="WHIT">            </span><span class="NAME">this.init</span><span class="PUNC">(</span><span class="NAME">properties</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>183</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>184</span> </span><span class="WHIT">        </span><span class="COMM">/**
<span class='line'>185</span>          * 更新粒子。
<span class='line'>186</span>         */</span><span class="WHIT">
<span class='line'>187</span> </span><span class="WHIT">        </span><span class="NAME">onUpdate</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">dt</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>188</span> </span><span class="WHIT">            </span><span class="NAME">dt</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">.</span><span class="NUMB">001</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>189</span> </span><span class="WHIT">            </span><span class="KEYW">if</span><span class="PUNC">(</span><span class="NAME">this._died</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>190</span> </span><span class="WHIT">                </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="KEYW">false</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>191</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>192</span> </span><span class="WHIT">            </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">ax</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.ax</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="WHIT"> </span><span class="NAME">this.system.gx</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>193</span> </span><span class="WHIT">            </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">ay</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.ay</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="WHIT"> </span><span class="NAME">this.system.gy</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>194</span> 
<span class='line'>195</span> </span><span class="WHIT">            </span><span class="NAME">this.vx</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">ax</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">dt</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>196</span> </span><span class="WHIT">            </span><span class="NAME">this.vy</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">ay</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">dt</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>197</span> </span><span class="WHIT">            </span><span class="NAME">this.x</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.vx</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">dt</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>198</span> </span><span class="WHIT">            </span><span class="NAME">this.y</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.vy</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">dt</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>199</span> 
<span class='line'>200</span> </span><span class="WHIT">            </span><span class="NAME">this.rotation</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.rotationV</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>201</span> 
<span class='line'>202</span> </span><span class="WHIT">            </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">this._time</span><span class="WHIT"> </span><span class="PUNC">></span><span class="WHIT"> </span><span class="PUNC">.</span><span class="NUMB">1</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>203</span> </span><span class="WHIT">                </span><span class="NAME">this.alpha</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.alphaV</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>204</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>205</span> 
<span class='line'>206</span> </span><span class="WHIT">            </span><span class="NAME">this.scale</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.scaleV</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>207</span> </span><span class="WHIT">            </span><span class="NAME">this.scaleX</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.scaleY</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.scale</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>208</span> 
<span class='line'>209</span> </span><span class="WHIT">            </span><span class="NAME">this._time</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">dt</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>210</span> </span><span class="WHIT">            </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">this._time</span><span class="WHIT"> </span><span class="PUNC">>=</span><span class="WHIT"> </span><span class="NAME">this.life</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="NAME">this.alpha</span><span class="WHIT"> </span><span class="PUNC">&lt;=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>211</span> </span><span class="WHIT">                </span><span class="NAME">this.destroy</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>212</span> </span><span class="WHIT">                </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="KEYW">false</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>213</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>214</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>215</span> </span><span class="WHIT">        </span><span class="COMM">/**
<span class='line'>216</span>          * 设置粒子图像。
<span class='line'>217</span>         */</span><span class="WHIT">
<span class='line'>218</span> </span><span class="WHIT">        </span><span class="NAME">setImage</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">img</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>219</span> </span><span class="WHIT">            </span><span class="NAME">this.drawable</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.drawable</span><span class="PUNC">||</span><span class="KEYW">new</span><span class="WHIT"> </span><span class="NAME">Drawable</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>220</span> </span><span class="WHIT">            </span><span class="NAME">frame</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="PUNC">[</span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">img.width</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">img.height</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>221</span> 
<span class='line'>222</span> </span><span class="WHIT">            </span><span class="NAME">this.width</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="PUNC">[</span><span class="NUMB">2</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>223</span> </span><span class="WHIT">            </span><span class="NAME">this.height</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="PUNC">[</span><span class="NUMB">3</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>224</span> </span><span class="WHIT">            </span><span class="NAME">this.drawable.rect</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>225</span> </span><span class="WHIT">            </span><span class="NAME">this.drawable.image</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">img</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>226</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>227</span> </span><span class="WHIT">        </span><span class="COMM">/**
<span class='line'>228</span>          * 销毁粒子
<span class='line'>229</span>         */</span><span class="WHIT">
<span class='line'>230</span> </span><span class="WHIT">        </span><span class="NAME">destroy</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>231</span> </span><span class="WHIT">            </span><span class="NAME">this._died</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">true</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>232</span> </span><span class="WHIT">            </span><span class="NAME">this.alpha</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>233</span> </span><span class="WHIT">            </span><span class="NAME">this.removeFromParent</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>234</span> </span><span class="WHIT">            </span><span class="NAME">diedParticles.push</span><span class="PUNC">(</span><span class="KEYW">this</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>235</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>236</span> </span><span class="WHIT">        </span><span class="COMM">/**
<span class='line'>237</span>          * 初始化粒子。
<span class='line'>238</span>         */</span><span class="WHIT">
<span class='line'>239</span> </span><span class="WHIT">        </span><span class="NAME">init</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">cfg</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>240</span> </span><span class="WHIT">            </span><span class="NAME">this.system</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">cfg.system</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>241</span> </span><span class="WHIT">            </span><span class="NAME">this._died</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">false</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>242</span> </span><span class="WHIT">            </span><span class="NAME">this._time</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>243</span> </span><span class="WHIT">            </span><span class="NAME">this.alpha</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">1</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>244</span> </span><span class="WHIT">            </span><span class="KEYW">for</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">i</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">l</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">PROPS.length</span><span class="PUNC">;</span><span class="WHIT"> </span><span class="NAME">i</span><span class="WHIT"> </span><span class="PUNC">&lt;</span><span class="WHIT"> </span><span class="NAME">l</span><span class="PUNC">;</span><span class="WHIT"> </span><span class="NAME">i</span><span class="PUNC">++</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>245</span> </span><span class="WHIT">                </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">p</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">PROPS</span><span class="PUNC">[</span><span class="NAME">i</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>246</span> </span><span class="WHIT">                </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">v</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">cfg</span><span class="PUNC">[</span><span class="NAME">p</span><span class="PUNC">]</span><span class="WHIT"> </span><span class="PUNC">===</span><span class="WHIT"> </span><span class="NAME">undefined</span><span class="WHIT"> </span><span class="PUNC">?</span><span class="WHIT"> </span><span class="NAME">PROPS_DEFAULT</span><span class="PUNC">[</span><span class="NAME">p</span><span class="PUNC">]</span><span class="WHIT"> </span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NAME">cfg</span><span class="PUNC">[</span><span class="NAME">p</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>247</span> </span><span class="WHIT">                </span><span class="KEYW">this</span><span class="PUNC">[</span><span class="NAME">p</span><span class="PUNC">]</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">getRandomValue</span><span class="PUNC">(</span><span class="NAME">v</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">cfg</span><span class="PUNC">[</span><span class="NAME">p</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="WHIT"> </span><span class="STRN">'Var'</span><span class="PUNC">]</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>248</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>249</span> 
<span class='line'>250</span> </span><span class="WHIT">            </span><span class="NAME">this.x</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.system.emitterX</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>251</span> </span><span class="WHIT">            </span><span class="NAME">this.y</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">this.system.emitterY</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>252</span> 
<span class='line'>253</span> </span><span class="WHIT">            </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">cfg.image</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>254</span> </span><span class="WHIT">                </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">cfg.frame</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>255</span> </span><span class="WHIT">                </span><span class="KEYW">if</span><span class="PUNC">(</span><span class="NAME">frame</span><span class="WHIT"> </span><span class="PUNC">&&</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="PUNC">[</span><span class="NUMB">0</span><span class="PUNC">]</span><span class="PUNC">.</span><span class="NAME">length</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>256</span> </span><span class="WHIT">                    </span><span class="NAME">frame</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="PUNC">[</span><span class="PUNC">(</span><span class="NAME">Math.random</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">frame.length</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">>></span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>257</span> </span><span class="WHIT">                </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>258</span> </span><span class="WHIT">                </span><span class="NAME">this.setImage</span><span class="PUNC">(</span><span class="NAME">cfg.image</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>259</span> </span><span class="WHIT">                </span><span class="KEYW">if</span><span class="PUNC">(</span><span class="NAME">cfg.pivotX</span><span class="WHIT"> </span><span class="PUNC">!==</span><span class="WHIT"> </span><span class="NAME">undefined</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>260</span> </span><span class="WHIT">                    </span><span class="NAME">this.pivotX</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">cfg.pivotX</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="PUNC">[</span><span class="NUMB">2</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>261</span> </span><span class="WHIT">                </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>262</span> </span><span class="WHIT">                </span><span class="KEYW">if</span><span class="PUNC">(</span><span class="NAME">cfg.pivotY</span><span class="WHIT"> </span><span class="PUNC">!==</span><span class="WHIT"> </span><span class="NAME">undefined</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>263</span> </span><span class="WHIT">                    </span><span class="NAME">this.pivotY</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">cfg.pivotY</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">frame</span><span class="PUNC">[</span><span class="NUMB">3</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>264</span> </span><span class="WHIT">                </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>265</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>266</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'>267</span> </span><span class="WHIT">        </span><span class="NAME">Statics</span><span class="PUNC">:</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>268</span> </span><span class="WHIT">            </span><span class="COMM">/**
<span class='line'>269</span>              * 生成粒子。
<span class='line'>270</span>              * @param {Object} cfg 粒子参数。
<span class='line'>271</span>             */</span><span class="WHIT">
<span class='line'>272</span> </span><span class="WHIT">            </span><span class="NAME">create</span><span class="PUNC">:</span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">cfg</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>273</span> </span><span class="WHIT">                </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">diedParticles.length</span><span class="WHIT"> </span><span class="PUNC">></span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>274</span> </span><span class="WHIT">                    </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">particle</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">diedParticles.pop</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>275</span> </span><span class="WHIT">                    </span><span class="NAME">particle.init</span><span class="PUNC">(</span><span class="NAME">cfg</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>276</span> </span><span class="WHIT">                    </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="NAME">particle</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>277</span> </span><span class="WHIT">                </span><span class="PUNC">}</span><span class="WHIT"> </span><span class="KEYW">else</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>278</span> </span><span class="WHIT">                    </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="KEYW">new</span><span class="WHIT"> </span><span class="NAME">Particle</span><span class="PUNC">(</span><span class="NAME">cfg</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>279</span> </span><span class="WHIT">                </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>280</span> </span><span class="WHIT">            </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>281</span> </span><span class="WHIT">        </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>282</span> 
<span class='line'>283</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>284</span> 
<span class='line'>285</span> </span><span class="WHIT">    </span><span class="COMM">/**
<span class='line'>286</span>      * Get the random value.
<span class='line'>287</span>      * @private
<span class='line'>288</span>      * @param  {Number} value     The value.
<span class='line'>289</span>      * @param  {Number} variances The variances.
<span class='line'>290</span>      * @return {Number}
<span class='line'>291</span>      */</span><span class="WHIT">
<span class='line'>292</span> </span><span class="WHIT">    </span><span class="KEYW">function</span><span class="WHIT"> </span><span class="NAME">getRandomValue</span><span class="PUNC">(</span><span class="NAME">value</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">variances</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>293</span> </span><span class="WHIT">        </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="NAME">variances</span><span class="WHIT"> </span><span class="PUNC">?</span><span class="WHIT"> </span><span class="NAME">value</span><span class="WHIT"> </span><span class="PUNC">+</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">Math.random</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">-</span><span class="WHIT"> </span><span class="PUNC">.</span><span class="NUMB">5</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NUMB">2</span><span class="WHIT"> </span><span class="PUNC">*</span><span class="WHIT"> </span><span class="NAME">variances</span><span class="WHIT"> </span><span class="PUNC">:</span><span class="WHIT"> </span><span class="NAME">value</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>294</span> </span><span class="WHIT">    </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'>295</span> 
<span class='line'>296</span> </span><span class="WHIT">    </span><span class="KEYW">return</span><span class="WHIT"> </span><span class="NAME">ParticleSystem</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'>297</span> </span><span class="PUNC">}</span><span class="PUNC">)</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span></pre></body></html>